module shifter(data,b,result);
	parameter Nminus1 = 31;  /* 32-bit shifter */
	input [Nminus1:0] data; /* compute parity of these bits */
	input [3:0] b; /* amount to shift */
	output [Nminus1:0] result; /* shift result */

	assign result = data << b; 
	endmodule